Sun Flare: Rendering Sun Specular with HDRI
Traditionally CG renders specular (the reflection of a light source) as a simple dot or disc. With image based lighting this has been replaced with HDR images of light sources for increased realism. This technique replaces the specular "dot" of the sun with an HDR image of a sun flare for increased realism.

You can download this ZIP file containing the Maya scene with this light kit, and a Nuke script to derive the various render elements.

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